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Re: Question about In-Ear Microphones

Dear Martin, 
I have been using the Knowles Electronic FG-3629 (omnidirectional microphone encased in a cylindrical case with a diameter of 2.57 mm and a height of 2.57 mm) for blocked-ear canal HRTFs. They sell for about $25 at newark.com
The amazing thing is that, although this microphones are not rated for ultrasound frequency, their frequency response is quite good in that range too. I have used them to measure bats' HRTFs as well.

Hope you find this info useful. Best regards,

---- Original message ----
>Date: Wed, 1 Feb 2006 14:37:24 +0100
>From: Martin Ostermayer <oster-m@xxxxxx>  
>Subject: Question about In-Ear Microphones  
>To: AUDITORY@xxxxxxxxxxxxxxx
>Dear List,
>I need to purchase a pair of in-ear microphones for doing HRTF measurements. I found a couple of threads suggesting the Sennheiser KE 4 to be a suited mic to do the job but the threads were from 1995. So I was wondering if anybody knew of other (better? cheaper?) alternatives available nowadays. I also would be thankful for any hint where I can buy any of them.
>Thanks in advance for your help.
>Martin Ostermayer
>Martin Ostermayer
>RA, School of Psychology
>University of Reading
>Reading, RG6 6AL, UK
>Verschicken Sie romantische, coole und witzige Bilder per SMS!
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Elena Grassi, Ph.D.
Perceptual Interfaces and Reality Lab
University of Maryland
Room 3355 A. V. Williams Building
College Park, MD   20742
Ph. 301-405-2876